Improvement in attaching door-knobs to spindles



A. B. SHAW. ATTACHING DOOR-KNOBS T0 SPINDLES.

1\To.h194,056. Patented Aug.14,1877.

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UNITED STATES PATENT OFFICE AI B. SHAW, OF MEDFORD, ASSIGNOR TO MARTIN W. CARR, OF SOMER- VILLE, AND HIRAM W. BROOKS, OF CAMBRIDGE, MASSACHUSETTS.

IMPROVEMENT IN ATTACHING DOOR-KNOBS TO SPINDLES.

Specification forming part of Letters Patent No. 194,056, dated August 14, 1877; application tiled January 30, 1877.

`a side view of' a door-knob and spindle to which my invention ,is applied. Figs. 2 and 3 are sections through line w w, Fig. 1, of the same, in different positions or stages of attachment.

Similar letters of reference indicate correspondin g parts.V

a. represents the knob, and b the spindle,

provided with one or more holes, b. c is the socket, having a hole through one side. d is a sleeve placed upon the socket c, and provided with a hole, e, and a smaller hole, e. f is a pin. his the rose or collar placed snugly against the sleeve d, and provided with a small flange, which extends under the said sleeve and keeps it in place.

To operate my device, place the spindle in the socket c, with the hole b under the hole in the socket; then placefthe sleeve d upon the socket c, with the larger hole e directly over the hole in the side of the socket and the spindle-hole; then drop the pin f, with the spiral'spring g upon its lower end, into the holes, as shown in Fig. 2. It will be seen, by observing the said Fig. 2, that the spring g lies between the under side ofI the socket c and the shoulder f upon the pin f. Next, press the pin down below the sleeve d, and turn the sleeve round so as to bring the smaller hole e' over the upper end of the pin f, as shown in Fig. 3. The spring is now compressed. The headf'" lies in the hole e', flush with the surface ofthe sleeve d, while the remainder of the pin is prevented from coming through the hole e' by the shoulder j" The opening e is large enough to receive any part ofthe pin f, while the opening e' is only large enough to allow the head f" to pass through.

The rose h having been placed in position, the arrangement is complete, as seen in Fig. l.

It will be seen that this construction does away with the screw in ordinary use, which is very liable to fall out or become loose, and allows the use of a castiron socket. A line finish is given to the sleeve d, which entirely covers the iron socket. The sleeve d is entirely independent of the rose.

This invention provides a sure and firm attachment, which cannot be shaken loose, and is very ornamental in appearance.

Having thus fully described my invention,

` what I claim, and desire to secure by Letters Patent, is- The combination, with the spindle b, socket c, and rose h, of the sleeve d, provided with the larger opening e and smaller opening e', and the pin f, provided with shoulders f and f, and spring g, all constructed and arranged substantially as and for the purposes herein set forth.

AI B. SHAW. Witnesses:

HENRY W. WILLIAMS, B. W. WILLIAMS. 

